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libcli: Remove finddcs_nbt.c

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This completes commit 06c90cb6f5

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Jan 30 13:27:51 CET 2018 on sn-devel-144
This commit is contained in:
Volker Lendecke 2018-01-29 12:20:19 +01:00 committed by Andrew Bartlett
parent e7425bd524
commit 0766f066af
1 changed files with 0 additions and 311 deletions
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311
source4/libcli/finddcs_nbt.c
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@ -1,311 +0,0 @@
/*
Unix SMB/CIFS implementation.
a composite API for finding a DC and its name
Copyright (C) Volker Lendecke 2005
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "include/includes.h"
#include <tevent.h>
#include "lib/messaging/irpc.h"
#include "librpc/gen_ndr/ndr_irpc_c.h"
#include "libcli/composite/composite.h"
#include "libcli/libcli.h"
#include "libcli/resolve/resolve.h"
#include "lib/util/tevent_ntstatus.h"
#include "libcli/finddc.h"
struct finddcs_nbt_state {
struct tevent_context *ev;
struct tevent_req *req;
struct imessaging_context *msg_ctx;
const char *my_netbios_name;
const char *domain_name;
struct dom_sid *domain_sid;
struct nbtd_getdcname r;
struct nbt_name_status node_status;
int num_dcs;
struct nbt_dc_name *dcs;
uint16_t nbt_port;
};
static void finddcs_nbt_name_resolved(struct composite_context *ctx);
static void finddcs_nbt_getdc_replied(struct tevent_req *subreq);
static void fallback_node_status(struct finddcs_nbt_state *state);
static void fallback_node_status_replied(struct nbt_name_request *name_req);
/*
* Setup and send off the a normal name resolution for the target name.
*
* The domain_sid parameter is optional, and is used in the subsequent getdc request.
*
* This will try a GetDC request, but this may not work. It will try
* a node status as a fallback, then return no name (but still include
* the IP)
*/
struct tevent_req *finddcs_nbt_send(TALLOC_CTX *mem_ctx,
const char *my_netbios_name,
uint16_t nbt_port,
const char *domain_name,
int name_type,
struct dom_sid *domain_sid,
struct resolve_context *resolve_ctx,
struct tevent_context *event_ctx,
struct imessaging_context *msg_ctx)
{
struct finddcs_nbt_state *state;
struct nbt_name name;
struct tevent_req *req;
struct composite_context *creq;
req = tevent_req_create(mem_ctx, &state, struct finddcs_nbt_state);
if (req == NULL) {
return NULL;
}
state->req = req;
state->ev = event_ctx;
state->nbt_port = nbt_port;
state->my_netbios_name = talloc_strdup(state, my_netbios_name);
if (tevent_req_nomem(state->my_netbios_name, req)) {
return tevent_req_post(req, event_ctx);
}
state->domain_name = talloc_strdup(state, domain_name);
if (tevent_req_nomem(state->domain_name, req)) {
return tevent_req_post(req, event_ctx);
}
if (domain_sid) {
state->domain_sid = dom_sid_dup(state, domain_sid);
if (tevent_req_nomem(state->domain_sid, req)) {
return tevent_req_post(req, event_ctx);
}
} else {
state->domain_sid = NULL;
}
state->msg_ctx = msg_ctx;
make_nbt_name(&name, state->domain_name, name_type);
creq = resolve_name_send(resolve_ctx, state, &name, event_ctx);
if (tevent_req_nomem(creq, req)) {
return tevent_req_post(req, event_ctx);
}
creq->async.fn = finddcs_nbt_name_resolved;
creq->async.private_data = state;
return req;
}
/* Having got an name query answer, fire off a GetDC request, so we
* can find the target's all-important name. (Kerberos and some
* netlogon operations are quite picky about names)
*
* The name is a courtesy, if we don't find it, don't completely fail.
*
* However, if the nbt server is down, fall back to a node status
* request
*/
static void finddcs_nbt_name_resolved(struct composite_context *ctx)
{
struct finddcs_nbt_state *state =
talloc_get_type(ctx->async.private_data, struct finddcs_nbt_state);
struct tevent_req *subreq;
struct dcerpc_binding_handle *irpc_handle;
const char *address;
NTSTATUS status;
status = resolve_name_recv(ctx, state, &address);
if (tevent_req_nterror(state->req, status)) {
return;
}
/* TODO: This should try and find all the DCs, and give the
* caller them in the order they responded */
state->num_dcs = 1;
state->dcs = talloc_array(state, struct nbt_dc_name, state->num_dcs);
if (tevent_req_nomem(state->dcs, state->req)) {
return;
}
state->dcs[0].address = talloc_steal(state->dcs, address);
/* Try and find the nbt server. Fallback to a node status
* request if we can't make this happen The nbt server just
* might not be running, or we may not have a messaging
* context (not root etc) */
if (!state->msg_ctx) {
fallback_node_status(state);
return;
}
irpc_handle = irpc_binding_handle_by_name(state, state->msg_ctx,
"nbt_server", &ndr_table_irpc);
if (irpc_handle == NULL) {
fallback_node_status(state);
return;
}
state->r.in.domainname = state->domain_name;
state->r.in.ip_address = state->dcs[0].address;
state->r.in.my_computername = state->my_netbios_name;
state->r.in.my_accountname = talloc_asprintf(state, "%s$", state->my_netbios_name);
if (tevent_req_nomem(state->r.in.my_accountname, state->req)) {
return;
}
state->r.in.account_control = ACB_WSTRUST;
state->r.in.domain_sid = state->domain_sid;
if (state->r.in.domain_sid == NULL) {
state->r.in.domain_sid = talloc_zero(state, struct dom_sid);
}
subreq = dcerpc_nbtd_getdcname_r_send(state, state->ev,
irpc_handle, &state->r);
if (tevent_req_nomem(subreq, state->req)) {
return;
}
tevent_req_set_callback(subreq, finddcs_nbt_getdc_replied, state);
}
/* Called when the GetDC request returns */
static void finddcs_nbt_getdc_replied(struct tevent_req *subreq)
{
struct finddcs_nbt_state *state =
tevent_req_callback_data(subreq,
struct finddcs_nbt_state);
NTSTATUS status;
status = dcerpc_nbtd_getdcname_r_recv(subreq, state);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
fallback_node_status(state);
return;
}
state->dcs[0].name = talloc_steal(state->dcs, state->r.out.dcname);
tevent_req_done(state->req);
}
/* The GetDC request might not be available (such as occours when the
* NBT server is down). Fallback to a node status. It is the best
* hope we have... */
static void fallback_node_status(struct finddcs_nbt_state *state)
{
struct nbt_name_socket *nbtsock;
struct nbt_name_request *name_req;
state->node_status.in.name.name = "*";
state->node_status.in.name.type = NBT_NAME_CLIENT;
state->node_status.in.name.scope = NULL;
state->node_status.in.dest_addr = state->dcs[0].address;
state->node_status.in.dest_port = state->nbt_port;
state->node_status.in.timeout = 1;
state->node_status.in.retries = 2;
nbtsock = nbt_name_socket_init(state, state->ev);
if (tevent_req_nomem(nbtsock, state->req)) {
return;
}
name_req = nbt_name_status_send(nbtsock, &state->node_status);
if (tevent_req_nomem(name_req, state->req)) {
return;
}
name_req->async.fn = fallback_node_status_replied;
name_req->async.private_data = state;
}
/* We have a node status reply (or perhaps a timeout) */
static void fallback_node_status_replied(struct nbt_name_request *name_req)
{
int i;
struct finddcs_nbt_state *state = talloc_get_type(name_req->async.private_data, struct finddcs_nbt_state);
NTSTATUS status;
status = nbt_name_status_recv(name_req, state, &state->node_status);
if (tevent_req_nterror(state->req, status)) {
return;
}
for (i=0; i < state->node_status.out.status.num_names; i++) {
int j;
if (state->node_status.out.status.names[i].type == NBT_NAME_SERVER) {
char *name = talloc_strndup(state->dcs, state->node_status.out.status.names[0].name, 15);
/* Strip space padding */
if (name) {
j = MIN(strlen(name), 15);
for (; j > 0 && name[j - 1] == ' '; j--) {
name[j - 1] = '\0';
}
}
state->dcs[0].name = name;
tevent_req_done(state->req);
return;
}
}
tevent_req_nterror(state->req, NT_STATUS_NO_LOGON_SERVERS);
}
NTSTATUS finddcs_nbt_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
int *num_dcs, struct nbt_dc_name **dcs)
{
struct finddcs_nbt_state *state = tevent_req_data(req, struct finddcs_nbt_state);
bool ok;
NTSTATUS status;
ok = tevent_req_poll(req, state->ev);
if (!ok) {
talloc_free(req);
return NT_STATUS_INTERNAL_ERROR;
}
status = tevent_req_simple_recv_ntstatus(req);
if (NT_STATUS_IS_OK(status)) {
*num_dcs = state->num_dcs;
*dcs = talloc_steal(mem_ctx, state->dcs);
}
return status;
}
NTSTATUS finddcs_nbt(TALLOC_CTX *mem_ctx,
const char *my_netbios_name,
uint16_t nbt_port,
const char *domain_name, int name_type,
struct dom_sid *domain_sid,
struct resolve_context *resolve_ctx,
struct tevent_context *event_ctx,
struct imessaging_context *msg_ctx,
int *num_dcs, struct nbt_dc_name **dcs)
{
NTSTATUS status;
struct tevent_req *req = finddcs_nbt_send(mem_ctx,
my_netbios_name,
nbt_port,
domain_name, name_type,
domain_sid,
resolve_ctx,
event_ctx, msg_ctx);
status = finddcs_nbt_recv(req, mem_ctx, num_dcs, dcs);
talloc_free(req);
return status;
}